How Much Sodium Is High on a Nutrition Label?
How much sodium is high? Learn why 20% DV, or 460 mg per serving, is considered high, and how FDA sodium claim thresholds differ.
If you are wondering how much sodium is high, FDA consumer guidance treats 20 percent of the Daily Value or more in one serving as high, which works out to 460 mg. The sodium Daily Value for adults and children 4 and older is 2,300 mg under 21 CFR 101.9(c)(9), and 20 percent of 2,300 mg is 460 mg. At or above that level, one serving provides a lot of sodium for the day.
That is the useful answer for reading a label. If you make food, there is an important distinction: the 20 percent mark is FDA consumer guidance, not a legal threshold. Nothing in the regulations defines a food as "high sodium." The binding sodium number in the rules is 140 mg, and it is a different type of number, measured on a different basis and used for a different purpose. Mixing the two up can lead to bad decisions on both sides of the shelf.
What is high sodium on a nutrition label?
FDA's consumer guidance for reading a Nutrition Facts panel is the 5 and 20 rule: 5 percent DV or less per serving is low, while 20 percent DV or more is high. Sodium is one of the three nutrients the guidance tells you to get less of, alongside saturated fat and added sugars.
Converting those percentages to milligrams requires one calculation against the 2,300 mg Daily Value in 101.9(c)(9):
- 20 percent of 2,300 mg is 460 mg. This is the "high" line.
- 5 percent of 2,300 mg is 115 mg. This is the "low" line.
- Between 115 mg and 460 mg is the middle, which the guidance does not name.
You do not need to calculate this while reading a label because the Nutrition Facts panel already provides the percentage. If the sodium row shows 20 percent DV or more, that is a high-sodium serving. If it shows 5 percent or less, it is low in the everyday sense.
The milligram conversions become more useful when comparing products with different serving sizes or when formulating a product and needing a numerical target rather than simply reading the panel.
There is one wrinkle. The declared percentage rounds to the nearest whole percent, so 20% DV appears from about 449 mg upward, not exactly 460 mg. Sodium above 140 mg is also declared to the nearest 10 mg under 101.9(c)(4), so a product containing 452 mg declares 450 mg and 20% DV.
For the reference values and arithmetic behind these percentages, see the FDA Daily Value chart. This article stays focused on sodium.
The 5 percent end, and what "low" means to a reader
The 5 percent end is less familiar, but it matters because many packaged foods sit in the 6 to 19 percent band, contributing 140 mg here and 250 mg there.
Together, those foods push average sodium intake in the United States to roughly 3,400 mg a day, about 50 percent above the recommended limit. More than 70 percent of that sodium comes from commercially processed, packaged and prepared foods, rather than the salt shaker.
The 2025-2030 Dietary Guidelines for Americans, released 7 January 2026, keep the limit at less than 2,300 mg a day for ages 14 and older.
The useful skill, then, is not simply spotting a single food containing 900 mg. Four items at 13% DV each use more than half the day before you have cooked anything.
| %DV on the panel | Sodium per serving | How a reader should take it |
|---|---|---|
| 5% or less | 115 mg or less | Low. Several of these and sodium is still not the problem. |
| 6% to 19% | About 120 mg to 450 mg | Middle. Fine once, additive across a day. |
| 20% or more | About 460 mg or more | High. One serving takes a fifth of the day or more. |
These bands are not purely informal. FDA's proposed front-of-package rule, published 16 January 2025 at 90 FR 5426, would print the same cut points on the package for saturated fat, sodium and added sugars: "Low" at 5 percent DV or less, "Med" at 6 to 19 percent, and "High" at 20 percent or more.
That rule is proposed. It has not been finalized, and no packaged food in the United States is required to carry such a box today.
A high sodium food label is not a legal classification
The 5 and 20 rule is FDA consumer education. It is not in 21 CFR 101.9, not in 21 CFR 101.61, and not in any binding regulation.
No rule defines a food as "high sodium," and none requires a warning, disclosure or front-panel mark simply because a serving crosses 460 mg. A product containing 1,100 mg per serving is fully compliant as long as that amount is declared accurately in the required format.
A manufacturer could not call a food "high sodium" even if it wanted to. Under 101.61(a)(1), a claim about the level of sodium may only use one of the terms defined in 101.61. That section defines the low end: sodium free, very low sodium, low sodium, reduced sodium and the salt terms. The "high" and "excellent source" claims at 20 percent DV in 101.54 apply to nutrients you are meant to get more of.
The binding sodium number is 140 mg. Under 101.61(b)(4), "low sodium" and its synonyms may be used when a food has a reference amount customarily consumed greater than 30 g or 2 tablespoons and contains 140 mg or less of sodium per reference amount.
If the reference amount is 30 g or less, or 2 tablespoons or less, the food must meet 140 mg per reference amount and per 50 g. For meals and main dishes, 101.61(b)(5) instead sets 140 mg or less per 100 g.
Three differences separate this number from the 5 and 20 rule:
- It is measured per reference amount customarily consumed, not per labeled serving. The labeled serving derives from the RACC but is not always equal to it, so two foods with identical panels can differ in claim eligibility.
- It is a gate, not a description. Meeting 140 mg does not require you to say anything. It simply unlocks a phrase the label may use.
- It sits at 140 mg, not 115 mg. A food containing 130 mg per reference amount may legally print "low sodium" on the front while a shopper using the 5 percent rule places it in the middle band.
FDA noticed that difference. The same January 2025 proposal would amend 101.61 to lower "low sodium" from 140 mg to 115 mg or less per reference amount, because 115 mg is 5 percent of the 2,300 mg Daily Value.
That change is proposed only. The binding definition today remains 140 mg.
The full set of sodium claims and what each requires
| Claim | Individual foods | Meals and main dishes |
|---|---|---|
| Sodium free, no sodium, zero sodium | Less than 5 mg per RACC and per labeled serving, with no sodium-containing ingredient unless asterisked as adding a trivial amount | Less than 5 mg per labeled serving |
| Very low sodium | 35 mg or less per RACC, and per 50 g if the RACC is 30 g or less or 2 tbsp or less | 35 mg or less per 100 g |
| Low sodium, little sodium, low source of sodium | 140 mg or less per RACC, and per 50 g if the RACC is 30 g or less or 2 tbsp or less | 140 mg or less per 100 g |
| Reduced sodium, less sodium, lower sodium | At least 25 percent less per RACC than a reference food, with the reference food, percent difference and milligram comparison declared | At least 25 percent less per 100 g |
| Salt free | Only if the food is sodium free | Same |
| Unsalted, no salt added, without added salt | No salt added in processing, the food it resembles is normally salted, and if not sodium free it must state "not a sodium free food" | Same |
"Reduced sodium" is a relative claim. Under 101.61(b)(6), it means only that the product contains at least 25 percent less sodium than an appropriate reference food.
The regulation's own worked example is a product whose "sodium content has been lowered from 300 to 150 mg per serving". Both numbers fall in the middle band: 300 mg is 13% DV and 150 mg is 7% DV.
The reduction is real, the claim is lawful, and the resulting food is still not a low-sodium food. 101.61(b)(6)(iii) adds another limitation: the claim cannot be made if the reference food already meets the definition of low sodium.
The salt row matters because 101.61(c) explicitly states that "salt" is not synonymous with "sodium." Salt means sodium chloride.
A food can contain no added salt and still have substantial sodium from baking soda, sodium phosphates or cultured ingredients. That is why the disclosure in 101.61(c)(2)(iii) exists. "No salt added" on the front and 380 mg on the Nutrition Facts panel are not contradictory.
"Light in sodium" and "lightly salted" are addressed in 21 CFR 101.56 rather than 101.61.
How serving size can make a high-sodium product look moderate
Every %DV on the Nutrition Facts panel is based on the labeled serving. Changing the serving therefore changes the percentage without changing the food itself. The rules constrain serving sizes more than people sometimes assume, but not completely.
Under 101.9(b)(6), a product packaged and sold individually containing less than 200 percent of its reference amount must be treated as a single-serving container, with the entire contents labeled as one serving. A single-serve soup cup cannot declare two servings simply to halve its sodium figure.
Under 101.9(b)(12)(i), a product containing at least 200 percent and up to 300 percent of the reference amount must carry a second column for the entire package. That dual column shows the amount a person actually receives when eating the whole package.
Above 300 percent of the reference amount, the package is a genuine multi-serving container and only the per-serving column is required. This is where a product with substantial sodium can appear moderate when you look only at one serving.
A container declaring four servings at 300 mg each shows 13% DV on the panel. If you eat the whole container in one sitting, however, you consume 1,200 mg, or 52 percent of the Daily Value. Nothing on the label is wrong. You have to multiply.
Two habits help:
- Read the servings per container line before reading the %DV.
- Compare competing products using milligrams per 100 g rather than only per serving, because serving sizes can vary by category even on the same shelf.
A %DV calculator can handle the arithmetic across a basket or product line.
What a producer should take from all this
Track two sodium numbers for every product, not one.
Milligrams per labeled serving determine the %DV on the Nutrition Facts panel and therefore how a shopper reads the product. Milligrams per reference amount customarily consumed determine claim eligibility under 101.61.
For many products, these figures are the same. For small single-serve packages, meals and main dishes measured per 100 g, and cases where the labeled serving has been rounded away from the reference amount, they are not.
These are the numbers that matter:
- 460 mg per labeled serving. At or above this amount, the panel shows 20% DV or more and a reader who knows the 5 and 20 rule treats the serving as high sodium. The consequence is commercial, not legal.
- 140 mg per reference amount. This is the binding ceiling for a "low sodium" claim under 101.61(b)(4).
- 115 mg per reference amount. This is not a requirement. It equals 5 percent of the Daily Value, is the level the January 2025 proposal would use for the "low sodium" claim, and is the point at which a reader applying the 5 percent rule agrees with your front panel. Building to 115 mg instead of 140 mg provides headroom if that proposal is finalized and costs nothing if it is not.
- 35 mg and 5 mg per reference amount. These are the levels for very low sodium and sodium free.
Two failure modes are worth watching.
A bare "reduced sodium" statement on the front is not a compliant claim. 101.61(b)(6)(ii) requires the reference food and percent difference in immediate proximity to the most prominent claim, plus a milligram comparison next to that claim or the nutrition label.
Similarly, using "no salt added" as a health signal on a product that still contains several hundred milligrams of sodium triggers the mandatory "not a sodium free food" statement, which reads badly when a customer checks the Nutrition Facts panel.
Beyond claims, FDA's voluntary sodium reduction targets establish category-level goals in milligrams per 100 g. Phase I was finalized in October 2021, while Phase II has remained in draft since August 2024. They are worth checking against your category before fixing a formulation target. See FDA sodium reduction targets for the numbers and their status.
Once the formulation is settled, build the panel from your recipe using our nutrition label generator. It applies the 101.9(c)(4) sodium rounding and whole-percent %DV rounding so the sodium row you print is the one an FDA reviewer would calculate.
How much sodium is high? Frequently asked questions
Is 400 mg of sodium per serving a lot?
It is in the middle band, close to the high end. Against the 2,300 mg Daily Value, 400 mg is 17 percent, so the panel reads 17% DV. That is just below the 20 percent level FDA guidance calls high. Two servings put you above a third of the Daily Value, so check servings per container before deciding.
Why does a package say "low sodium" when the panel shows 6% DV?
Because the claim and %DV use different systems. 21 CFR 101.61(b)(4) permits "low sodium" at 140 mg or less per reference amount customarily consumed, while 5 percent of the Daily Value is 115 mg. A food between 115 mg and 140 mg can qualify for the claim while showing 6% DV. Both can therefore be correct.
Does FDA require a warning on high-sodium foods?
No. There is no mandatory high-sodium warning, disclosure or symbol in United States food labeling. The proposed front-of-package "Nutrition Info" box published 16 January 2025 would require "High" next to sodium at 20 percent DV or more, but the proposal has not been finalized and no such box is required today.
Is "no salt added" the same as low sodium?
No. 21 CFR 101.61(c) states that salt is not synonymous with sodium. "No salt added" means no sodium chloride was added during processing and that the food it resembles is normally salted. The product can still contain sodium from other ingredients. If it is not sodium free, the label must state "not a sodium free food" or "not for control of sodium in the diet".
How do I compare two products with different serving sizes?
Convert both products to sodium per 100 g and compare those values. Comparing %DV across different serving sizes tells you which single serving contributes more sodium toward the Daily Value, not which food is saltier. Both comparisons can be useful, but the Nutrition Facts panel directly answers only the per-serving question.
Can I get my product under 20% DV by declaring a smaller serving?
Generally not. The labeled serving derives from the reference amount customarily consumed for the category, rather than manufacturer preference. 101.9(b)(6) requires an individually packaged product under 200 percent of its reference amount to declare the whole contents as one serving, while 101.9(b)(12)(i) requires a second whole-package column between 200 and 300 percent.
Does the 2,300 mg Daily Value apply to children?
Not to every age group. 101.9(c)(9) sets sodium at 2,300 mg for adults and children 4 and older, but 1,500 mg for children 1 through 3, so a toddler product uses the smaller value. Infant labels through 12 months show no sodium %DV at all under 101.9(j)(5).
Need a nutrition label for your own product? Make it with our free nutrition facts label generator
Sources
- How to Understand and Use the Nutrition Facts Label (FDA)
- Sodium in Your Diet (FDA)
- 21 CFR 101.61 Nutrient content claims for the sodium content of foods (eCFR) (eCFR)
- 21 CFR 101.9 Nutrition labeling of food (eCFR) (eCFR)
- Food Labeling: Front-of-Package Nutrition Information, proposed rule (90 FR 5426) (Federal Register)
- Dietary Guidelines for Americans 2025-2030 (USDA / HHS)
